EMG biofeedback training in adult attention-deficit/hyperactivity disorder: An active (control) training?
EMG biofeedback training in adult attention-deficit/hyperactivity disorder: An active (control) training?
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DOI：
10.1016/j.bbr.2017.04.021
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发表时间：
2017-06-30
影响因子：
2.7
通讯作者：
Ehlis, Ann-Christine
中科院分区：
文献类型：
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作者：
Barth, Beatrix;Mayer, Kerstin;Ehlis, Ann-Christine
目的：探讨肌电生物反馈在成人注意缺陷多动障碍(ADHD)患者神经反馈研究中的神经生理学效应。方法：20例ADHD患者在30次EMG生物反馈训练中训练左右冈上肌的肌肉活动。在临床和神经生理学水平对肌电反馈引起的变化进行了评估；此外，还评估了训练过程中顶端记录的脑电活动变化与治疗过程中症状严重程度变化的关系，以探讨肌电生物反馈临床效果的机制。结果：参与者在自我评定量表上表现出显著的行为改善。阿尔法功率显著增加，但增量频率范围没有显著变化；经多次比较调整后，θ和β频率范围的变化不明显。脑电频段的改变与ADHD症状的改变之间没有统计学意义上的相关性。结论：目前通过单电极脑电评估的结果为更清楚地理解肌电生物反馈的临床作用机制提供了一个起点。虽然我们没有揭示肌电反馈对大脑活动的系统影响，但肌电生物反馈是否会导致我们在本研究中没有收集到的脑区或参数(例如运动皮质)的变化仍然是一个悬而未决的问题。
Objective: The present study aimed at revealing neurophysiological effects induced by electromyography (EMG) based biofeedback, considered as a semi-active control condition in neurofeedback studies, in adult attention-deficit/hyperactivity disorder (ADHD) patients.Methods: 20 adult ADHD patients trained their muscle activity in the left and right supraspinatus muscle over the course of 30 EMG biofeedback sessions. Changes induced by the EMG feedback were evaluated at a clinical and neurophysiological level; additionally, the relation between changes in EEG activity recorded at the vertex over the training course and changes of symptom severity over the treatment course were assessed in order to investigate the mechanisms underlying clinical effects of EMG biofeedback.Results: Participants showed significant behavioral improvements on a self-rating scale. There was a significant increase in alpha power, but no significant changes in the delta frequency range; changes in the theta and beta frequency range were not significant after adjustment for multiple comparisons. No statistically significant correlation was found between changes in EEG frequency bands and changes in ADHD symptoms.Conclusions: The current results assessed by means of a single-electrode EEG constitute a starting point regarding a clearer understanding of mechanisms underlying clinical effects of EMG biofeedback. Although we did not reveal systematic effects induced by EMG feedback on brain activity it remains an open question whether EMG biofeedback induces changes in brain regions or parameters we did not gather in the present study (e.g. motor cortex).